1.
, . Validity and the research process. Newbury Park (California), Beverly Hills (California), London: Sage publications; 1985.
et . Validity and the research process. Newbury Park (California), Beverly Hills (California), London : Sage publications, 6 mai 1985. ISBN 0803933762
Brinberg David & MacGrath Joseph E. (1985). Validity and the research process. Sage publications.
Style de citation MLA (8e éd.)Brinberg David et MacGrath Joseph E. Validity and the Research Process. Sage publications, 1985.
Attention : ces citations peuvent ne pas être correctes à 100%.